Three squares are placed as shown. Given that the green areas are equal, what is the side length of the orange square?
Two semicircles inside a rectangle. What is the proportion of the red to the green area?
Three congruent rectangles consisting of two squares each are placed as shown. What is the blue area?
Three touching congruent circles inscribed in an equilateral triangle. A small equilateral triangle inscribed in the centre space. What fraction is blue?
A square and two equilateral triangles inside and touching a circle. What’s the angle α?
Two concentric equilateral triangles with parallel sides. What fraction is orange?
A triangle, a median and another cevian. What is the proportion of the two areas?
A square and two congruent isosceles triangles with variable top angle. What is the maximum fraction shaded?
A triangle and two medians. What fraction is shaded?
Four congruent right triangles form a rectangle. What fraction is red?